When compared to the previous youths, especially before the pandemic, younger generations have become sedentary globally. However, the truth is physical activity positively contributes to human growth and development by causing both physiological and psychological benefits. In the wake of revitalizing such benefits, this current study aimed to develop a guidebook containing physical activity tests that should be implemented in primary schools for early childhood through rhythmic gymnastic sport. This study was the Research and Development alias R & D with 106 and 37 subjects on a large and small scale respectively. Whilst collecting data, instruments such as questionnaires for expert's judgment, anthropometric and bio-motor tests were employed, and norm tests and skills tests as well. Data were analyzed using qualitative and quantitative approaches based on mean, standard deviation, percentages. After addressing all data, especially going through all R&D steps, it was revealed that the material expert assessment test results obtained a value of over 80%, likewise for the media assessment test. The results of both small-and large-scale testing showed that most experts indeed stated that the development of the current guidebook was in the category of very good to enhance skills accrual in early childhood growth. Therefore, we conclude that the guidebook, VCD, and tests developed are practical, practicable, and suitable for early childhood.